[mpich-discuss] MPI I/O spilt collective implementation: MPI_File_write_all_begin blocking or non-blocking?

[pramod kumbhar]

thanks! MPI_File_iwrite_all working as expected.

-Pramod

On Tue, Feb 9, 2016 at 12:52 AM, Balaji, Pavan <balaji at anl.gov> wrote:

>
> I believe it is valid to do that in split collectives.  If you want truly
> nonblocking nature, the standard way to do it would be to use nonblocking
> collective I/O, i.e., MPI_File_iwrite_all.  This is guaranteed to not block
> during the MPI_File_iwrite_all call.
>
>   -- Pavan
>
> > On Feb 8, 2016, at 5:48 PM, pramod kumbhar <pramod.s.kumbhar at gmail.com>
> wrote:
> >
> > Hello All,
> >
> > I am testing MPI_FIle_write_all_begin/_end and it seems like
> > MPI_File_write_all_begin waits for i/o completion.
> >
> > Could someone confirm the implementation of these routines?
> >
> > Thanks,
> > Pramod
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